Book-sewing



(No Model.)

E. S. BOYNTON.

BOOK SEWING. No. 247,475. Patented Sept. 27,1881.

UNITED STATES PATENT Erica.

EDWARD S. BOYNTON, OF BRIDGEPORT, CONNECTICUT.

BOOK-SEWING.

SPECIFICATION forming part of Letters Patent No. 247,475, dated. September 27, 1881.

Application filed May 5, 1881. (No model.)

. To all whom it may concern:

Be it known that I, EDWARD S. BoYN'roN,

of Bridgeport, county of Fairfield, State of. Connecticut, have invented an Improvement in Book-Binding, of which the following description, in connection with the accompanying drawings, is a specification.

My invention relates'to book-binding, and is shown embodied in a book sewed upon the method shown in United States Patent No.1 2l1,616, granted to me January 28. 1879, to

which reference may be had. In that patent a thread,which.I herein call the internal thread,

was employed, that extended inside of and against the fold of each signature, the entire length of the page traversing the saw-cuts, and binding-cords were sewed through each of the said saw-cuts and looped or turned around the threads within the signatures, they binding the different signatures together and performing the function of the bands in an ordinary hand-sewed book, while the internal threads in co-operation therewith held the internal sheets of each signature in place. The ends of the binding-cords extended beyond the ends of the saidsawed cuts of the se'wed book, to enable the cases to be fastened thereto in the usual manner. In this construction it was found necessary to make the binding-cords quite stout, in order to give suflicient strength to the connection between the different signat-ures and to properly hold the cases, and as the said cord formed a loop in each signature it made the ridge at the saw-cut in some instances objectionablylarge. This defect is entirely removed by my present invention, by which an exceedingly strong, flexible, and durable binding is produced, theinvcntion mainly consisting in providing independent bandpieces of usual character placed in the sawcuts and sewed through and through by the cords'by which the internal sheets of thesignatures are held in place. As herein shown, the band-piece laid in the saw-cut is sewed through and through by binding-cords, which are looped around internal cords, as in my former invention, thus securing the said internal threads to the band-piece, which is itself securely sewed to the back of the book. The binding-cord consequently need be only of sufficient strength to properly secure the internal thread and retain the internal sheets in place, the different signatures and the cases being now held together by the strength of the independent band-piece, in addition to that of the said binding-cord.

Figure 1 is' a rear view of a series of signatures'sewed together according to my invention, and Fig. 2 a transverse section thereof -on a plane passing through one of the saw-cuts.

The signatures (it, provided with saw-cuts 2, will preferably be sewed in accordance with my invention upon a machine invented by me for this purpose, which will form the subject of a future application for Letters Patent, or they may be sewed by hand, the order of the different steps in the operation varying somewhat, according to the means employed for doing the'work, and not forming an essential part of my invention. In any case the bands b, of any suitable or usual form and material, are laid in as many of the saw-cuts 2 as is desired for the finished book, after which s nitable needles supplied with the binding-threads 0 may be passed through the said bands and saw-cuts to the interior of the signature and there properly operated to form a loop, 3, (see Fig. 2,) through which the internal threads, d, one of which is shown in dotted lines, Fig. 1, may be passed, either by hand 'or by a device forming part of the machine, as described in my former patent referred to. The bindingthread is then withdrawn, tightening up the loop to properly hold the internal thread, cl, and a new signature sewed on in the same manner.

It is obvious that the order ofsteps in the operation might be reversed, the internal threads, (1, being laid in the folds of the signatures and the binding-thread 0 carried through the band I) and around the said internal thread, and th en out through the band again.

By this construction the baud b strongly holds the different signatures together-a thing which in my former invention was done by the binding-threads c, which had to be made sufficiently stout for this purpose, but which in my present invention need only be strong enough to hold the internal threads, at, and retain the internal sheets of the signature in place.

The saw-cuts nearest the ends of the book will preferably not be supplied with bands I), and the binding-cords c in the said end sawcuts will be drawn out, as described in my former patent, to bring the end of the internal threads through the saw-cut upon the back of the book, as shown at the right-hand end of Fig. 1.

A sufiicient portion of the band-piece b will have to be left between the last signature of one book and the first signature of the next, as shown at 4, to be secured to the cases to properly attach them .to the signatures when sewed together, as the said band-pieces, being pierced by the threads in sawing, cannot subsequently be drawn off. The ends ofthe binding-threads 0 will also preferably be left to join upon the cases with the ends of the bandpieces I).

Piercing the band-pieces by the threads that secure the internal sheets of a signature in place joins the said signatures more securely together than when the said band-pieces are free to slide in the sawcuts, and makes a very firm and at the same time flexible binding, the signatures being less liable to become separated in the subsequent processes of forwarding the book.

It is obvious that wires or fastening-pins, such as shown in Letters Patent No. 193,109, July 17, 1877, might be employed instead of the internal threads, (1, they being equivalent thereto in their relation to the hand and binding-threads.

The saw-cuts may be dispensed with, the bands I) being merely laid across the back of 1 the book, and the binding-thread a piercing the signatures.

I claim 1. The combination, with the signatures of a hook and a band-piece laid across the back thereof, of threads sewed directly through the said band-piece and passed within the signatures to hold the inner sheets in place, whereby the different signatures are strongly fastened together and the sheets of each signature securely held therein, substantially as described.

2. The combination, with the signatures of a book, of the internal threads lying in the fold of the inner sheet, the band -pieces, and the bin din g-threads interlooped with said internal threads and connecting them with the said band-pieces, substantially as described.

3. The signatures of a book provided with a series of saw-cuts, the band-pieces therein, and the internal threads laid in the folds of the inner sheets of the said signatures, and having their ends drawn through the saw-cuts nearest the ends of the sheets, combined with the binding-threads sewed directly through the said bands and interlooped with the internal threads, substantially as described.

In testimony whereofI havesigned my name to this specification in the presence of two subscribing witnesses.

EDXVARD S. BOYN TON.

Witnesses:

J os. P. LIVERMORE, ARTHUR REYNOLDS. 

